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(No Model.) 3 Sheets-Sheet 1. I. R. JOSLIN & G. M. THOMPSON.

L. JOSLIN, Admimstratrix'of I. R. Josnm, Deceased APPARATUS FOR MAKINGCOMPOUND LUMBER. 794.

Patented Mar. 4, 1890.

N, PETERS. Phulc-Lnh m hw, Wahlngicn. DJ;

(No Model.) 3 SheetsSheet 2. I. R. JOSLIN & G. M. THOMPSON.

L. JOSLIN,- Administratrix of I. R. JOSLIN, Deceased. APPARATU$ FORMAKING COMPOUND LUMBER.

No. 422,794. m Patented Mar. 4, 1890.

I v W 225-5 I I I -/2 i i Q 20 20" a 1 2 2 f 7 l 3 l x I y C Q :0 ]f I28 [a '(No Model.) a Sheets-Sheet 3. I. R. JOSLIN & C. M. THOMPSON L.JOSLIN, Administratrix of I. R. JOSLIN, Deceased. APPARATUS FOR MAKINGCOMPOUND LUMBER.

No. 422,794. Patented Mar. 4, 1890.

n. PETERS Phmuilihogmphur. wmin mn. D. c,

UNITED STATES PATENT OFFICE.

ISAAC R. J OSLIN, OF NEW YORK, AND COLIN M. THOMPSON, OF BROOKLYN,

NElV YORK; LAURINDA JOSLIN ADMINISTRATRIX OF SAID ISAAC R. JOS- LIN,DECEASED.

APPARATUS FOR MAKING COMPOUND LUMBER.

SPECIFICATION forming part of Letters Patent No. 422,794, dated March 4,1890.

Application filed August 26, 1889- Serial 110,322,023. (N model.)

To all whom it may concern.-

Be it known that we, ISAAC R. JOsLIN and COLIN M. THOMPSON, citizens ofthe United States, residing, respectively, at New York,

New York county, and Brooklyn, Kings county, State of New York, haveinvented certain new and useful Improvements in Ap-.

paratus for Making Compound Lumber, of which the following is aspecification.

Our invention relates to machines for preparing what is popularly knownas F compound lumber, in which two boards or pieces of lumber, generallya cheaper and a more expensive kind, are tongued and grooves and I 5then forced together after they have been coated upon thecontacting-faces with glue or cement. As each piece of lumber must beproperly prepared upon the one side before the glue is applied, we havedevised a single machine whereby a second handling is saved of takingthe boards, as heretofore, from one machine and feeding them to theother, and also have secured a saving in time, as the glue can beapplied 011 one portion of the board while the planer is still operatingon another portion.

Our invention therefore consists in the construction of the machine, aswill be hereinafter more fully set forth, and as illustrated go in theaccompanying drawi1 1gs,in which Figure 1 is a longitudinal verticalsectional view of our improved machine. Fig. 2 is a side view. Fig. 3 isa broken top plan View.

Fig. 4 is an enlarged sectional view of the 5 planer-head. Fig. 5 is anelevation of the preferred form of the planer-head. Fig. 6 is anenlarged detailview of aportion of one of the gluing-rolls, and Fig. 7is a 'detail view showing the means of supporting and elevat-' ing theglue-pan and rollers.

The frame I carries at its top the planer mechanism A at one end, agluing apparatus B at the other, and a feeding device 0 intermediate thetwo. The planer A consists more particularly of the revolving head 1 andthe feed-rolls 2 2, the head having the alternate bits, two of the bitsbeing notched or recessed, as at 3, to form points or teeth 4, whichform the grooves, while the intermediate bits do not extend so far outand smooth off the entire surface of the board. The widths of thegrooves in the boards are the same as the widths of the points, so thatany two pieces of the lumber that have been. operated on by the planerwill fit together, the 5 5. tongues of the one fitting in the grooves ofthe other. Instead of making the recesses only as wide as the teeth, weprefer to make them three times as wide and to arrange the toothed bitsso that the teeth in one bit will fall opposite the middle portions ofthe recesses of the other, as shown in Fig. 5, as we can thus get morerapid and satisfactory work with at least fifty per cent. less friction.

To give the teeth a good clearance when in operation, and thus preventthe gumming or heating whereby the sharp corners of the tongues 0n thelumber would be destroyed,

the point of each tooth is swaged or made broader than the lowerportion. This can be done by a blow upon the end of the tooth or bygrinding out the lower portion more than the end.

The lumber is fed to the planer-head by the feed-rolls 2 2, placeddirectly in front of the cutter-head in the usual manner, although theymay be dispensed with and the board forced through by hand until its endis caught by the rolls 5 5 of the feeding device C,which will also thenpass it along to the gluing ap- 8o paratus.

The gluing apparatus cone): the rear end of the frame I, the glue, andwhich is kept sr of a pipe which leads from th. pan to any convenienttank t which, however, is not shown on in. a ings, as it forms no partof this invention. Two rollers 7 and 8 are journaled in bearings uponthe end of the glue-pan, with their lower portions immersed in the glueand their upper portions in the line of travel of the board to be glued,so that as the rollers revolve they will be constantly receiving a freshsupply of glue from the pan and as constantly apply- 5 ing it to theunder side of the board as it passes over them.

In practice it has been found difficult to apply the glue to everyportion of the boards under surface, and especially to the side of Icethe tongues and the corners of the grooves; hence we have constructedour gluing-rolls as shownmore clearly in Fig. 6that is, the surface is,formed or provided with a series of annular rings or projections 9, ofsuch a Width and shape as to enter the grooves of the board and applythe glue to the sides, bottoms, and corners of the grooves as thoroughlyas possible. The face of the gluing-roller between these rings orprojections of course will apply the glue to the outer faces of thetongues of the board, so that when the board is applied to another boardsimilarly tongued and grooved the two will be as securely held togetheras if they had grown that way. If desired, both of the boards may becoated with the glue, although we prefer gluing but one, and oneof thegluing-rollers maybe dispensed with; but we also prefer to use two ormore, thus insuring a perfect coating of the lumber, and consequently aperfect joining and meeting of the two pieces into one piece. Therollers are made of any suitable material,

- as iron or steel or hard rubber, and may be which are 'journaled in aframe 11, pivotally secured at one end to the portion of the framecarrying the upper one of the feed-rolls 5 5. The opposite end of theframe 11 is adjustably supported upon the legs or rods 12 12, the lowerends of which are pivotally connected with the frame I, and their upperends are screw-threaded and provided with the adjusting-nuts 43 453. Inthis manner each of the rollers in the frame can be made to bear uponthe upper surface of boards of different thickness, the rollers beingseparately adj ustable by screws 20 within the frame to compensate forthe different angles to which the frame is adjusted relatively as itsouter end is moved to or from the gluing-rollers, and they maybeprovided with rubber blocks or other suitable yielding device abovetheir bearings, if desired, to make their pressure elastic or yielding.

After the upper feed-roller 5 and the two rollers 10 10 over theglue-pan have been adjusted to give the desired pressure for onethickness of lumber it requires time and trouble change them allseparately, as must be done for a different thickness. To avoid this wehave constructed our machine with a frame H, within which the frame I ismounted, which frame I carries the glue-pan, with the gluing-rollersjournaled across its top, the lower feed-roller 5, and, if desired, theplaner cutter-head A. The lower portion. of the frame I is mounted insuitable guideways 24 011 the frame II, along which the frame is movedby means of the vertical screw-threaded shafts 25, the transverse shaft26, and the bevel-gear 29 29. The outer ends of the frame 11 areprovided with the ordinary guide rolls or supports 27 27. Besides theabove adjustment for the entire frame I, the glue-pan, and with it thegluing-rollers, is also adjustable vertically by means of the pins 2121, which pass down through cars 28 28 upon the sides of the pan andrest within their lower ends upon the top of the frameI. With theabove-described means for adj usting the frame I, it is evident thatafter the upper feed-roller 5 and pressure-rollers 1O 10 have once beenproperly adj usted any change for lumber of different thickness is mademore quickly and correctly by moving the frame I up or down, as thiswill give the required change between the upper and lower parts withoutchanging the horizontal position of the parts relatively to each other.

A suitable guide-strip 50 may be adj ustably secured to the frame of themachine, against which one edge of the board is kept in contact as itpasses through the machine to cause it to pass from the planer to theglu ing-rolls vs itho'ut getting out, of line.

Motion is imparted to the diiferentparts of our machine from thedriving-shaft 13 by any convenient driving mechanism, as suit able beltand pulley mechanism for the planer and the trains of gear-wheels 15 and16 for the gluing apparatus and feeding device, the only requisite beingthat the different parts are properly driven to do their work inconjunction with the movement and operation of the other parts.

The operation of our machine is as follows: A board to be operated upon,and which is preferably a trifle thicker than will be needed to make upthe piece of compound lumber, is fed to the planer in the ordinarymanner, where its under surface is faced and also grooved by the actionof the two kinds of bits upon the cutter-head. From the planer it passesthrough the feeding device 0 to the i gluing apparatus, the feedingdevice passing it to the gluing-rollers at a constant rate of speed, andthus serving the purpose of j feeding the lumber both to the cutter andto the gluing devices. As the lumber passes over the gluing-rollers itsunder surface is evenly and thoroughly covered with a coa ing of glue,which is taken from the pan and spread on the board by the action of therollers. After having been covered with glue the board, together withanother similarlyprepared one which is applied to the first one withtheir glued surface in contact, is passed through a press, which willforce the two boards together so closely that after the glue has driedor set it will'be impossible to sepa= rate them.

Having thus described our invention, we claim v 1. In a machine forpreparing compound lumber, the combination, with the upper feedrollerand pressure-rollers mounted in a fixed frame, of the lower feed roller,glue-pan, and the gluing-rollers carried by an adjustable frame,substantially as described.

2. In a machine for preparing compound.

lumber, the combination, with a frame hav ing vertical guides, of anadjustable frame mounted in said guides, adjusting mechanism therefor,feed-rollers carried by said frames, and a gluing device carried by theadjustable frame, substantially as described.

3. In a machine for preparing compound lumber, the combination, with averticallymovable frame carrying the planer mechanism and lowerfeed-roller, of a glue-pan Vertically adjustable 011 said frame andcarrying gluing-rollers, and a fixed frame carrying the upperfeed-roller, substantially as described.

4. In a machine for preparing compound lumber, the combination, with astationary frame II and vertically-adjustable frame I, of a glue-panresting on the frame I, independently adjustable thereon, andgluing-rollers '7 8, mounted in bearings upon said pan, sub stantiallyas describeda 5. In an organized machine of the class described, thecombination, with a planer and feed rollers, of gluing-rollers forcoating the planed surface of the lumber and a single driving shaftgeared to the planer, the feed rollers, and the gluing-rollers,substantially as described.

6. In an organized machine of the class described, the combination, withfeed-rollers and a planer having grooving-cutters, of a gluing devicecomprising a glue-pan and grooved rollers mounted upon said pan, saidfeed-rollers, planer, and gluing-rollers being operated from a singlemain shaft, substantially as described.

7. In a machine for preparing compound lumber, the combination, in thecutter-head, of alternate plain and toothed knives, the teeth of onetoothed knife being arranged midway of the spaces between the teeth ofthe other, substantially as described.

In testimony whereof we have signed our names to this specification inthe presence of two subscribing witnesses,

ISAAC R. JOSLIN. COLIN M. THOMPSON,

Witnesses:

GEORGE T. LAWRENCE, JOSEPHINE 13L SOHUREMAN,

